public async ValueTask <bool> DeleteManga(long mangaId)
{
using var context = Context;
var mangaService = new MangaService(context);
var chapterService = new ChapterService(context);
var imageService = new ImageService(context);
var mangaTagMappingService = new MangaTagMappingService(context);
var favoriteService = new FavoriteService(context);
var readProgressService = new ReadProgressService(context);
context.BeginTran();
try
{
var chapters = await chapterService.GetListAsync(it => it.MangaId == mangaId);
var chapterIds = chapters.Select(it => it.ObjectId).ToList();
await mangaService.DeleteAsync(it => it.ObjectId == mangaId);
await mangaTagMappingService.DeleteAsync(it => it.MangaId == mangaId);
await chapterService.DeleteAsync(it => it.MangaId == mangaId);
await imageService.DeleteAsync(it => chapterIds.Contains(it.ChapterId));
await favoriteService.DeleteAsync(it => it.EntityId == mangaId);
await readProgressService.DeleteAsync(it => it.MangaId == mangaId);
context.CommitTran();
FtsIndexService.DeleteMangaFtxIndex(mangaId);
return(true);
}
catch (Exception e)
{
context.RollbackTran();
throw;
}
}
public async ValueTask <bool> Update(Tag tag)
{
using var context = Context;
try
{
context.BeginTran();
var tagService = new TagService(context);
var toBeMapping = new HashSet <long>();
var mangaTagMappingService = new MangaTagMappingService(context);
var oldTag = await tagService.GetTagWithAliases(it => it.ObjectId == tag.ObjectId);
// Update metadata
if (oldTag == null || !await tagService.Update(tag))
{
context.RollbackTran();
return(false);
}
// Check type of key tag == type of tag
if (oldTag.Key != tag.Key)
{
var keyTag = await tagService.GetSingleAsync(it => it.ObjectId == tag.Key);
if (tag.TypeId != keyTag?.TypeId)
{
context.RollbackTran();
return(false);
}
toBeMapping.Add(oldTag.Key);
}
// Recover all removed aliases
foreach (var alias in oldTag.Aliases.Where(oldTagAlias => tag.Aliases.All(it => it.ObjectId != oldTagAlias.ObjectId)))
{
var oldTagAlias = await tagService.GetSingleAsync(it => it.ObjectId == alias.ObjectId);
oldTagAlias.Key = oldTagAlias.ObjectId;
if (!await tagService.Update(oldTagAlias))
{
context.RollbackTran();
return(false);
}
}
for (int i = 0; i < tag.Aliases.Count; i++)
{
var tagAlias = tag.Aliases[i];
var oldAlias = await tagService.GetSingleAsync(it => it.ObjectId == tagAlias.ObjectId);
if (oldAlias.TypeId != tag.TypeId)
{
context.RollbackTran();
return(false);
}
oldAlias.Aliases = await tagService.GetListAsync(it => it.Key == tagAlias.ObjectId && it.Key != it.ObjectId);
if (oldAlias.Aliases != null)
{
tag.Aliases.AddRange(oldAlias.Aliases);
}
if (oldAlias.Key == tag.Key)
{
continue;
}
toBeMapping.Add(oldAlias.Key);
oldAlias.Key = tag.Key;
if (await tagService.Update(oldAlias))
{
continue;
}
context.RollbackTran();
return(false);
}
foreach (var oldKey in toBeMapping)
{
await mangaTagMappingService.Update(oldKey, tag.Key);
}
FtsIndexService.UpdateFtsIndex(tag);
context.CommitTran();
return(true);
}
catch (Exception e)
{
context.RollbackTran();
throw;
}
}
